GREGARIOUS

A. Antisocial

B. Glorious

C. Horrendous

D. Similar

Answer: Option A

Solution(By Examveda Team)

Gregarious : Sociable.
Antisocial : Contrary to the law and customs of the society.
Glorious : Celebrated ,famous.
Horrendous : Extremely unpleasant.
Similar : Having a resemblance in appearance, character,or quantity,without being identical.

Antonym of Gregarious is Antisocial.